Home / 78,730,620.80-118,095,931.20-72,684,003.20

Finding the Fourth Proportional to 78,730,620.80, 118,095,931.20 and 72,684,003.20

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Solution

The fourth proportional to 78,730,620.80, 118,095,931.20 and 72,684,003.20 is: 109,026,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,730,620.80 : 118,095,931.20 = 72,684,003.20 : x
  2. Step 2: Convert to fraction form
    78,730,620.80/118,095,931.20 = 72,684,003.20/x
  3. Step 3: Cross multiply
    78,730,620.80x = 118,095,931.20 × 72,684,003.20
  4. Step 4: Simplify right side
    78,730,620.80x = 8,583,685,041,247,780
  5. Step 5: Solve for x
    x = 8,583,685,041,247,780/78,730,620.80
  6. Step 6: Final answer
    x = 109,026,004.80

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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.