Home / 70,167.20-96,820-39,953.76

Finding the Fourth Proportional to 70,167.20, 96,820 and 39,953.76

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Solution

The fourth proportional to 70,167.20, 96,820 and 39,953.76 is: 55,130.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,167.20 : 96,820 = 39,953.76 : x
  2. Step 2: Convert to fraction form
    70,167.20/96,820 = 39,953.76/x
  3. Step 3: Cross multiply
    70,167.20x = 96,820 × 39,953.76
  4. Step 4: Simplify right side
    70,167.20x = 3,868,323,043.20
  5. Step 5: Solve for x
    x = 3,868,323,043.20/70,167.20
  6. Step 6: Final answer
    x = 55,130.08

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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.