Home / 30,121,987.20-45,182,980.80-28,043,462.40

Finding the Fourth Proportional to 30,121,987.20, 45,182,980.80 and 28,043,462.40

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Solution

The fourth proportional to 30,121,987.20, 45,182,980.80 and 28,043,462.40 is: 42,065,193.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121,987.20 : 45,182,980.80 = 28,043,462.40 : x
  2. Step 2: Convert to fraction form
    30,121,987.20/45,182,980.80 = 28,043,462.40/x
  3. Step 3: Cross multiply
    30,121,987.20x = 45,182,980.80 × 28,043,462.40
  4. Step 4: Simplify right side
    30,121,987.20x = 1,267,087,223,184,721.75
  5. Step 5: Solve for x
    x = 1,267,087,223,184,721.75/30,121,987.20
  6. Step 6: Final answer
    x = 42,065,193.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.