Home / 78,730,647.40-118,095,971.10-48,339,965.80

Finding the Fourth Proportional to 78,730,647.40, 118,095,971.10 and 48,339,965.80

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Solution

The fourth proportional to 78,730,647.40, 118,095,971.10 and 48,339,965.80 is: 72,509,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,730,647.40 : 118,095,971.10 = 48,339,965.80 : x
  2. Step 2: Convert to fraction form
    78,730,647.40/118,095,971.10 = 48,339,965.80/x
  3. Step 3: Cross multiply
    78,730,647.40x = 118,095,971.10 × 48,339,965.80
  4. Step 4: Simplify right side
    78,730,647.40x = 5,708,755,204,091,788
  5. Step 5: Solve for x
    x = 5,708,755,204,091,788/78,730,647.40
  6. Step 6: Final answer
    x = 72,509,948.70

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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.