Home / 81,073,669.80-121,611,292.02-64,859,340.36

Finding the Fourth Proportional to 81,073,669.80, 121,611,292.02 and 64,859,340.36

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Solution

The fourth proportional to 81,073,669.80, 121,611,292.02 and 64,859,340.36 is: 97,289,640.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,073,669.80 : 121,611,292.02 = 64,859,340.36 : x
  2. Step 2: Convert to fraction form
    81,073,669.80/121,611,292.02 = 64,859,340.36/x
  3. Step 3: Cross multiply
    81,073,669.80x = 121,611,292.02 × 64,859,340.36
  4. Step 4: Simplify right side
    81,073,669.80x = 7,887,628,180,744,532
  5. Step 5: Solve for x
    x = 7,887,628,180,744,532/81,073,669.80
  6. Step 6: Final answer
    x = 97,289,640.40

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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.