Home / 72,130.20-99,567.45-64,563.18

Finding the Fourth Proportional to 72,130.20, 99,567.45 and 64,563.18

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Solution

The fourth proportional to 72,130.20, 99,567.45 and 64,563.18 is: 89,122.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,130.20 : 99,567.45 = 64,563.18 : x
  2. Step 2: Convert to fraction form
    72,130.20/99,567.45 = 64,563.18/x
  3. Step 3: Cross multiply
    72,130.20x = 99,567.45 × 64,563.18
  4. Step 4: Simplify right side
    72,130.20x = 6,428,390,617.95
  5. Step 5: Solve for x
    x = 6,428,390,617.95/72,130.20
  6. Step 6: Final answer
    x = 89,122.05

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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.