Home / 74,312.02-102,549.90-40,320.28

Finding the Fourth Proportional to 74,312.02, 102,549.90 and 40,320.28

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Solution

The fourth proportional to 74,312.02, 102,549.90 and 40,320.28 is: 55,641.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,312.02 : 102,549.90 = 40,320.28 : x
  2. Step 2: Convert to fraction form
    74,312.02/102,549.90 = 40,320.28/x
  3. Step 3: Cross multiply
    74,312.02x = 102,549.90 × 40,320.28
  4. Step 4: Simplify right side
    74,312.02x = 4,134,840,681.97
  5. Step 5: Solve for x
    x = 4,134,840,681.97/74,312.02
  6. Step 6: Final answer
    x = 55,641.61

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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.