Home / 72,725,937.15-100,363,912.86-39,688,314.30

Finding the Fourth Proportional to 72,725,937.15, 100,363,912.86 and 39,688,314.30

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Solution

The fourth proportional to 72,725,937.15, 100,363,912.86 and 39,688,314.30 is: 54,771,030.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725,937.15 : 100,363,912.86 = 39,688,314.30 : x
  2. Step 2: Convert to fraction form
    72,725,937.15/100,363,912.86 = 39,688,314.30/x
  3. Step 3: Cross multiply
    72,725,937.15x = 100,363,912.86 × 39,688,314.30
  4. Step 4: Simplify right side
    72,725,937.15x = 3,983,274,517,965,491.50
  5. Step 5: Solve for x
    x = 3,983,274,517,965,491.50/72,725,937.15
  6. Step 6: Final answer
    x = 54,771,030.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.