Home / 78,411,621.47-108,192,180.80-45,810,274.91

Finding the Fourth Proportional to 78,411,621.47, 108,192,180.80 and 45,810,274.91

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Solution

The fourth proportional to 78,411,621.47, 108,192,180.80 and 45,810,274.91 is: 63,208,915.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,411,621.47 : 108,192,180.80 = 45,810,274.91 : x
  2. Step 2: Convert to fraction form
    78,411,621.47/108,192,180.80 = 45,810,274.91/x
  3. Step 3: Cross multiply
    78,411,621.47x = 108,192,180.80 × 45,810,274.91
  4. Step 4: Simplify right side
    78,411,621.47x = 4,956,313,545,133,988
  5. Step 5: Solve for x
    x = 4,956,313,545,133,988/78,411,621.47
  6. Step 6: Final answer
    x = 63,208,915.37

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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.