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Finding the Fourth Proportional to 70,995,646.80, 97,972,004.52 and 40,058,694.72

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Solution

The fourth proportional to 70,995,646.80, 97,972,004.52 and 40,058,694.72 is: 55,279,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,995,646.80 : 97,972,004.52 = 40,058,694.72 : x
  2. Step 2: Convert to fraction form
    70,995,646.80/97,972,004.52 = 40,058,694.72/x
  3. Step 3: Cross multiply
    70,995,646.80x = 97,972,004.52 × 40,058,694.72
  4. Step 4: Simplify right side
    70,995,646.80x = 3,924,630,620,173,140
  5. Step 5: Solve for x
    x = 3,924,630,620,173,140/70,995,646.80
  6. Step 6: Final answer
    x = 55,279,876.97

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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.