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Finding the Fourth Proportional to 90,304.71, 124,622.51 and 51,541.76

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Solution

The fourth proportional to 90,304.71, 124,622.51 and 51,541.76 is: 71,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,304.71 : 124,622.51 = 51,541.76 : x
  2. Step 2: Convert to fraction form
    90,304.71/124,622.51 = 51,541.76/x
  3. Step 3: Cross multiply
    90,304.71x = 124,622.51 × 51,541.76
  4. Step 4: Simplify right side
    90,304.71x = 6,423,263,281.17
  5. Step 5: Solve for x
    x = 6,423,263,281.17/90,304.71
  6. Step 6: Final answer
    x = 71,128.77

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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.