Home / 78,312,339.70-117,468,509.55-58,156,947.70

Finding the Fourth Proportional to 78,312,339.70, 117,468,509.55 and 58,156,947.70

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Solution

The fourth proportional to 78,312,339.70, 117,468,509.55 and 58,156,947.70 is: 87,235,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,312,339.70 : 117,468,509.55 = 58,156,947.70 : x
  2. Step 2: Convert to fraction form
    78,312,339.70/117,468,509.55 = 58,156,947.70/x
  3. Step 3: Cross multiply
    78,312,339.70x = 117,468,509.55 × 58,156,947.70
  4. Step 4: Simplify right side
    78,312,339.70x = 6,831,609,966,296,301
  5. Step 5: Solve for x
    x = 6,831,609,966,296,301/78,312,339.70
  6. Step 6: Final answer
    x = 87,235,421.55

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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.