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Finding the Fourth Proportional to 70,908.78, 97,853.63 and 39,077.72

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Solution

The fourth proportional to 70,908.78, 97,853.63 and 39,077.72 is: 53,926.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,908.78 : 97,853.63 = 39,077.72 : x
  2. Step 2: Convert to fraction form
    70,908.78/97,853.63 = 39,077.72/x
  3. Step 3: Cross multiply
    70,908.78x = 97,853.63 × 39,077.72
  4. Step 4: Simplify right side
    70,908.78x = 3,823,896,069.47
  5. Step 5: Solve for x
    x = 3,823,896,069.47/70,908.78
  6. Step 6: Final answer
    x = 53,926.98

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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.