Home / 70,419.12-97,176.80-38,587.28

Finding the Fourth Proportional to 70,419.12, 97,176.80 and 38,587.28

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Solution

The fourth proportional to 70,419.12, 97,176.80 and 38,587.28 is: 53,249.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,419.12 : 97,176.80 = 38,587.28 : x
  2. Step 2: Convert to fraction form
    70,419.12/97,176.80 = 38,587.28/x
  3. Step 3: Cross multiply
    70,419.12x = 97,176.80 × 38,587.28
  4. Step 4: Simplify right side
    70,419.12x = 3,749,788,391.10
  5. Step 5: Solve for x
    x = 3,749,788,391.10/70,419.12
  6. Step 6: Final answer
    x = 53,249.58

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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.