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Finding the Fourth Proportional to 70,920.77, 97,875.03 and 39,089.59

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Solution

The fourth proportional to 70,920.77, 97,875.03 and 39,089.59 is: 53,946.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,920.77 : 97,875.03 = 39,089.59 : x
  2. Step 2: Convert to fraction form
    70,920.77/97,875.03 = 39,089.59/x
  3. Step 3: Cross multiply
    70,920.77x = 97,875.03 × 39,089.59
  4. Step 4: Simplify right side
    70,920.77x = 3,825,894,695.84
  5. Step 5: Solve for x
    x = 3,825,894,695.84/70,920.77
  6. Step 6: Final answer
    x = 53,946.04

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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.