Home / 77,276,731.20-115,989,746.40-47,043,643.20

Finding the Fourth Proportional to 77,276,731.20, 115,989,746.40 and 47,043,643.20

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Solution

The fourth proportional to 77,276,731.20, 115,989,746.40 and 47,043,643.20 is: 70,610,909.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,276,731.20 : 115,989,746.40 = 47,043,643.20 : x
  2. Step 2: Convert to fraction form
    77,276,731.20/115,989,746.40 = 47,043,643.20/x
  3. Step 3: Cross multiply
    77,276,731.20x = 115,989,746.40 × 47,043,643.20
  4. Step 4: Simplify right side
    77,276,731.20x = 5,456,580,244,500,085
  5. Step 5: Solve for x
    x = 5,456,580,244,500,085/77,276,731.20
  6. Step 6: Final answer
    x = 70,610,909.13

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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.