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Finding the Fourth Proportional to 70,999.84, 97,975.20 and 42,721.12

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Solution

The fourth proportional to 70,999.84, 97,975.20 and 42,721.12 is: 58,952.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,999.84 : 97,975.20 = 42,721.12 : x
  2. Step 2: Convert to fraction form
    70,999.84/97,975.20 = 42,721.12/x
  3. Step 3: Cross multiply
    70,999.84x = 97,975.20 × 42,721.12
  4. Step 4: Simplify right side
    70,999.84x = 4,185,610,276.22
  5. Step 5: Solve for x
    x = 4,185,610,276.22/70,999.84
  6. Step 6: Final answer
    x = 58,952.39

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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.