Home / 78,889,411.18-118,334,114.94-21,381,681.20

Finding the Fourth Proportional to 78,889,411.18, 118,334,114.94 and 21,381,681.20

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Solution

The fourth proportional to 78,889,411.18, 118,334,114.94 and 21,381,681.20 is: 32,072,521.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,411.18 : 118,334,114.94 = 21,381,681.20 : x
  2. Step 2: Convert to fraction form
    78,889,411.18/118,334,114.94 = 21,381,681.20/x
  3. Step 3: Cross multiply
    78,889,411.18x = 118,334,114.94 × 21,381,681.20
  4. Step 4: Simplify right side
    78,889,411.18x = 2,530,182,320,731,237
  5. Step 5: Solve for x
    x = 2,530,182,320,731,237/78,889,411.18
  6. Step 6: Final answer
    x = 32,072,521.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.