Home / 42,740.40-58,980.40-30,012.08

Finding the Fourth Proportional to 42,740.40, 58,980.40 and 30,012.08

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Solution

The fourth proportional to 42,740.40, 58,980.40 and 30,012.08 is: 41,415.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,740.40 : 58,980.40 = 30,012.08 : x
  2. Step 2: Convert to fraction form
    42,740.40/58,980.40 = 30,012.08/x
  3. Step 3: Cross multiply
    42,740.40x = 58,980.40 × 30,012.08
  4. Step 4: Simplify right side
    42,740.40x = 1,770,124,483.23
  5. Step 5: Solve for x
    x = 1,770,124,483.23/42,740.40
  6. Step 6: Final answer
    x = 41,415.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.