Home / 78,392,172.64-108,187,257.98-47,031,401.84

Finding the Fourth Proportional to 78,392,172.64, 108,187,257.98 and 47,031,401.84

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Solution

The fourth proportional to 78,392,172.64, 108,187,257.98 and 47,031,401.84 is: 64,906,970.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,392,172.64 : 108,187,257.98 = 47,031,401.84 : x
  2. Step 2: Convert to fraction form
    78,392,172.64/108,187,257.98 = 47,031,401.84/x
  3. Step 3: Cross multiply
    78,392,172.64x = 108,187,257.98 × 47,031,401.84
  4. Step 4: Simplify right side
    78,392,172.64x = 5,088,198,404,025,127
  5. Step 5: Solve for x
    x = 5,088,198,404,025,127/78,392,172.64
  6. Step 6: Final answer
    x = 64,906,970.08

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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.