Home / 55,130.90-76,123.49-42,363.96

Finding the Fourth Proportional to 55,130.90, 76,123.49 and 42,363.96

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Solution

The fourth proportional to 55,130.90, 76,123.49 and 42,363.96 is: 58,495.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,130.90 : 76,123.49 = 42,363.96 : x
  2. Step 2: Convert to fraction form
    55,130.90/76,123.49 = 42,363.96/x
  3. Step 3: Cross multiply
    55,130.90x = 76,123.49 × 42,363.96
  4. Step 4: Simplify right side
    55,130.90x = 3,224,891,988.14
  5. Step 5: Solve for x
    x = 3,224,891,988.14/55,130.90
  6. Step 6: Final answer
    x = 58,495.19

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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.