Home / 78,889,397.55-118,334,094.50-21,381,667.58

Finding the Fourth Proportional to 78,889,397.55, 118,334,094.50 and 21,381,667.58

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Solution

The fourth proportional to 78,889,397.55, 118,334,094.50 and 21,381,667.58 is: 32,072,500.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,397.55 : 118,334,094.50 = 21,381,667.58 : x
  2. Step 2: Convert to fraction form
    78,889,397.55/118,334,094.50 = 21,381,667.58/x
  3. Step 3: Cross multiply
    78,889,397.55x = 118,334,094.50 × 21,381,667.58
  4. Step 4: Simplify right side
    78,889,397.55x = 2,530,180,271,441,090
  5. Step 5: Solve for x
    x = 2,530,180,271,441,090/78,889,397.55
  6. Step 6: Final answer
    x = 32,072,500.87

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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.