Home / 56,801.28-78,389.19-31,307.61

Finding the Fourth Proportional to 56,801.28, 78,389.19 and 31,307.61

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Solution

The fourth proportional to 56,801.28, 78,389.19 and 31,307.61 is: 43,206.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,801.28 : 78,389.19 = 31,307.61 : x
  2. Step 2: Convert to fraction form
    56,801.28/78,389.19 = 31,307.61/x
  3. Step 3: Cross multiply
    56,801.28x = 78,389.19 × 31,307.61
  4. Step 4: Simplify right side
    56,801.28x = 2,454,178,188.74
  5. Step 5: Solve for x
    x = 2,454,178,188.74/56,801.28
  6. Step 6: Final answer
    x = 43,206.39

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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.