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Finding the Fourth Proportional to 70,339.20, 97,214.40 and 56,342.40

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Solution

The fourth proportional to 70,339.20, 97,214.40 and 56,342.40 is: 77,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,339.20 : 97,214.40 = 56,342.40 : x
  2. Step 2: Convert to fraction form
    70,339.20/97,214.40 = 56,342.40/x
  3. Step 3: Cross multiply
    70,339.20x = 97,214.40 × 56,342.40
  4. Step 4: Simplify right side
    70,339.20x = 5,477,292,610.56
  5. Step 5: Solve for x
    x = 5,477,292,610.56/70,339.20
  6. Step 6: Final answer
    x = 77,869.70

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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.