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Finding the Fourth Proportional to 70,347.24, 97,078.86 and 38,515.86

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Solution

The fourth proportional to 70,347.24, 97,078.86 and 38,515.86 is: 53,151.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,347.24 : 97,078.86 = 38,515.86 : x
  2. Step 2: Convert to fraction form
    70,347.24/97,078.86 = 38,515.86/x
  3. Step 3: Cross multiply
    70,347.24x = 97,078.86 × 38,515.86
  4. Step 4: Simplify right side
    70,347.24x = 3,739,075,780.72
  5. Step 5: Solve for x
    x = 3,739,075,780.72/70,347.24
  6. Step 6: Final answer
    x = 53,151.71

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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.