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Finding the Fourth Proportional to 70,233.90, 96,931.89 and 40,030.08

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Solution

The fourth proportional to 70,233.90, 96,931.89 and 40,030.08 is: 55,246.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,233.90 : 96,931.89 = 40,030.08 : x
  2. Step 2: Convert to fraction form
    70,233.90/96,931.89 = 40,030.08/x
  3. Step 3: Cross multiply
    70,233.90x = 96,931.89 × 40,030.08
  4. Step 4: Simplify right side
    70,233.90x = 3,880,191,311.25
  5. Step 5: Solve for x
    x = 3,880,191,311.25/70,233.90
  6. Step 6: Final answer
    x = 55,246.70

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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.