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Finding the Fourth Proportional to 65,604,686.80, 98,407,030.20 and 31,517,813.20

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Solution

The fourth proportional to 65,604,686.80, 98,407,030.20 and 31,517,813.20 is: 47,276,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,604,686.80 : 98,407,030.20 = 31,517,813.20 : x
  2. Step 2: Convert to fraction form
    65,604,686.80/98,407,030.20 = 31,517,813.20/x
  3. Step 3: Cross multiply
    65,604,686.80x = 98,407,030.20 × 31,517,813.20
  4. Step 4: Simplify right side
    65,604,686.80x = 3,101,574,395,410,358.50
  5. Step 5: Solve for x
    x = 3,101,574,395,410,358.50/65,604,686.80
  6. Step 6: Final answer
    x = 47,276,719.80

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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.