Home / 90,307.09-124,684.68-56,367.28

Finding the Fourth Proportional to 90,307.09, 124,684.68 and 56,367.28

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Solution

The fourth proportional to 90,307.09, 124,684.68 and 56,367.28 is: 77,824.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,307.09 : 124,684.68 = 56,367.28 : x
  2. Step 2: Convert to fraction form
    90,307.09/124,684.68 = 56,367.28/x
  3. Step 3: Cross multiply
    90,307.09x = 124,684.68 × 56,367.28
  4. Step 4: Simplify right side
    90,307.09x = 7,028,136,269.27
  5. Step 5: Solve for x
    x = 7,028,136,269.27/90,307.09
  6. Step 6: Final answer
    x = 77,824.86

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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.