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Finding the Fourth Proportional to 70,370.61, 97,097.80 and 40,155.18

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Solution

The fourth proportional to 70,370.61, 97,097.80 and 40,155.18 is: 55,406.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,370.61 : 97,097.80 = 40,155.18 : x
  2. Step 2: Convert to fraction form
    70,370.61/97,097.80 = 40,155.18/x
  3. Step 3: Cross multiply
    70,370.61x = 97,097.80 × 40,155.18
  4. Step 4: Simplify right side
    70,370.61x = 3,898,979,636.60
  5. Step 5: Solve for x
    x = 3,898,979,636.60/70,370.61
  6. Step 6: Final answer
    x = 55,406.36

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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.