Home / 56,715.15-84,490.71-54,156.36

Finding the Fourth Proportional to 56,715.15, 84,490.71 and 54,156.36

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Solution

The fourth proportional to 56,715.15, 84,490.71 and 54,156.36 is: 80,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,715.15 : 84,490.71 = 54,156.36 : x
  2. Step 2: Convert to fraction form
    56,715.15/84,490.71 = 54,156.36/x
  3. Step 3: Cross multiply
    56,715.15x = 84,490.71 × 54,156.36
  4. Step 4: Simplify right side
    56,715.15x = 4,575,709,307.42
  5. Step 5: Solve for x
    x = 4,575,709,307.42/56,715.15
  6. Step 6: Final answer
    x = 80,678.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.