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Finding the Fourth Proportional to 70,987,688, 97,963,009.50 and 38,392,640

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Solution

The fourth proportional to 70,987,688, 97,963,009.50 and 38,392,640 is: 52,981,843.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,987,688 : 97,963,009.50 = 38,392,640 : x
  2. Step 2: Convert to fraction form
    70,987,688/97,963,009.50 = 38,392,640/x
  3. Step 3: Cross multiply
    70,987,688x = 97,963,009.50 × 38,392,640
  4. Step 4: Simplify right side
    70,987,688x = 3,761,058,557,050,080
  5. Step 5: Solve for x
    x = 3,761,058,557,050,080/70,987,688
  6. Step 6: Final answer
    x = 52,981,843.23

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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.