Home / 90,381.21-124,711.41-56,384.29

Finding the Fourth Proportional to 90,381.21, 124,711.41 and 56,384.29

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Solution

The fourth proportional to 90,381.21, 124,711.41 and 56,384.29 is: 77,801.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,381.21 : 124,711.41 = 56,384.29 : x
  2. Step 2: Convert to fraction form
    90,381.21/124,711.41 = 56,384.29/x
  3. Step 3: Cross multiply
    90,381.21x = 124,711.41 × 56,384.29
  4. Step 4: Simplify right side
    90,381.21x = 7,031,764,307.75
  5. Step 5: Solve for x
    x = 7,031,764,307.75/90,381.21
  6. Step 6: Final answer
    x = 77,801.17

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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.