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Finding the Fourth Proportional to 75,302.40, 103,706.88 and 73,669.76

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Solution

The fourth proportional to 75,302.40, 103,706.88 and 73,669.76 is: 101,458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,302.40 : 103,706.88 = 73,669.76 : x
  2. Step 2: Convert to fraction form
    75,302.40/103,706.88 = 73,669.76/x
  3. Step 3: Cross multiply
    75,302.40x = 103,706.88 × 73,669.76
  4. Step 4: Simplify right side
    75,302.40x = 7,640,060,959.95
  5. Step 5: Solve for x
    x = 7,640,060,959.95/75,302.40
  6. Step 6: Final answer
    x = 101,458.40

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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.