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Finding the Fourth Proportional to 72,154.80, 99,565.20 and 45,295.20

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Solution

The fourth proportional to 72,154.80, 99,565.20 and 45,295.20 is: 62,502.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,154.80 : 99,565.20 = 45,295.20 : x
  2. Step 2: Convert to fraction form
    72,154.80/99,565.20 = 45,295.20/x
  3. Step 3: Cross multiply
    72,154.80x = 99,565.20 × 45,295.20
  4. Step 4: Simplify right side
    72,154.80x = 4,509,825,647.04
  5. Step 5: Solve for x
    x = 4,509,825,647.04/72,154.80
  6. Step 6: Final answer
    x = 62,502.09

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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.