Home / 90,666.61-135,995.76-31,506.91

Finding the Fourth Proportional to 90,666.61, 135,995.76 and 31,506.91

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Solution

The fourth proportional to 90,666.61, 135,995.76 and 31,506.91 is: 47,258.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,666.61 : 135,995.76 = 31,506.91 : x
  2. Step 2: Convert to fraction form
    90,666.61/135,995.76 = 31,506.91/x
  3. Step 3: Cross multiply
    90,666.61x = 135,995.76 × 31,506.91
  4. Step 4: Simplify right side
    90,666.61x = 4,284,805,830.71
  5. Step 5: Solve for x
    x = 4,284,805,830.71/90,666.61
  6. Step 6: Final answer
    x = 47,258.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.