Home / 78,880,341.90-118,320,512.85-77,746,601.10

Finding the Fourth Proportional to 78,880,341.90, 118,320,512.85 and 77,746,601.10

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Solution

The fourth proportional to 78,880,341.90, 118,320,512.85 and 77,746,601.10 is: 116,619,901.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,880,341.90 : 118,320,512.85 = 77,746,601.10 : x
  2. Step 2: Convert to fraction form
    78,880,341.90/118,320,512.85 = 77,746,601.10/x
  3. Step 3: Cross multiply
    78,880,341.90x = 118,320,512.85 × 77,746,601.10
  4. Step 4: Simplify right side
    78,880,341.90x = 9,199,017,714,496,372
  5. Step 5: Solve for x
    x = 9,199,017,714,496,372/78,880,341.90
  6. Step 6: Final answer
    x = 116,619,901.65

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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.