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Finding the Fourth Proportional to 72,125.66, 99,547.16 and 47,553.32

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Solution

The fourth proportional to 72,125.66, 99,547.16 and 47,553.32 is: 65,632.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,125.66 : 99,547.16 = 47,553.32 : x
  2. Step 2: Convert to fraction form
    72,125.66/99,547.16 = 47,553.32/x
  3. Step 3: Cross multiply
    72,125.66x = 99,547.16 × 47,553.32
  4. Step 4: Simplify right side
    72,125.66x = 4,733,797,592.37
  5. Step 5: Solve for x
    x = 4,733,797,592.37/72,125.66
  6. Step 6: Final answer
    x = 65,632.65

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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.