Home / 72,187.61-99,617.24-40,359.47

Finding the Fourth Proportional to 72,187.61, 99,617.24 and 40,359.47

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Solution

The fourth proportional to 72,187.61, 99,617.24 and 40,359.47 is: 55,695.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,187.61 : 99,617.24 = 40,359.47 : x
  2. Step 2: Convert to fraction form
    72,187.61/99,617.24 = 40,359.47/x
  3. Step 3: Cross multiply
    72,187.61x = 99,617.24 × 40,359.47
  4. Step 4: Simplify right side
    72,187.61x = 4,020,498,612.08
  5. Step 5: Solve for x
    x = 4,020,498,612.08/72,187.61
  6. Step 6: Final answer
    x = 55,695.14

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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.