Home / 70,752.12-97,638.39-38,920.20

Finding the Fourth Proportional to 70,752.12, 97,638.39 and 38,920.20

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Solution

The fourth proportional to 70,752.12, 97,638.39 and 38,920.20 is: 53,710.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,752.12 : 97,638.39 = 38,920.20 : x
  2. Step 2: Convert to fraction form
    70,752.12/97,638.39 = 38,920.20/x
  3. Step 3: Cross multiply
    70,752.12x = 97,638.39 × 38,920.20
  4. Step 4: Simplify right side
    70,752.12x = 3,800,105,666.48
  5. Step 5: Solve for x
    x = 3,800,105,666.48/70,752.12
  6. Step 6: Final answer
    x = 53,710.13

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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.