Home / 55,302.61-76,320.26-31,111.15

Finding the Fourth Proportional to 55,302.61, 76,320.26 and 31,111.15

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Solution

The fourth proportional to 55,302.61, 76,320.26 and 31,111.15 is: 42,934.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,302.61 : 76,320.26 = 31,111.15 : x
  2. Step 2: Convert to fraction form
    55,302.61/76,320.26 = 31,111.15/x
  3. Step 3: Cross multiply
    55,302.61x = 76,320.26 × 31,111.15
  4. Step 4: Simplify right side
    55,302.61x = 2,374,411,056.90
  5. Step 5: Solve for x
    x = 2,374,411,056.90/55,302.61
  6. Step 6: Final answer
    x = 42,934.88

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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.