Home / 78,725,110.40-118,087,665.60-48,334,428.80

Finding the Fourth Proportional to 78,725,110.40, 118,087,665.60 and 48,334,428.80

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Solution

The fourth proportional to 78,725,110.40, 118,087,665.60 and 48,334,428.80 is: 72,501,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,110.40 : 118,087,665.60 = 48,334,428.80 : x
  2. Step 2: Convert to fraction form
    78,725,110.40/118,087,665.60 = 48,334,428.80/x
  3. Step 3: Cross multiply
    78,725,110.40x = 118,087,665.60 × 48,334,428.80
  4. Step 4: Simplify right side
    78,725,110.40x = 5,707,699,865,101,409
  5. Step 5: Solve for x
    x = 5,707,699,865,101,409/78,725,110.40
  6. Step 6: Final answer
    x = 72,501,643.20

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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.