Home / 90,845,382.72-136,166,495.76-47,719,142.40

Finding the Fourth Proportional to 90,845,382.72, 136,166,495.76 and 47,719,142.40

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Solution

The fourth proportional to 90,845,382.72, 136,166,495.76 and 47,719,142.40 is: 71,525,356.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,845,382.72 : 136,166,495.76 = 47,719,142.40 : x
  2. Step 2: Convert to fraction form
    90,845,382.72/136,166,495.76 = 47,719,142.40/x
  3. Step 3: Cross multiply
    90,845,382.72x = 136,166,495.76 × 47,719,142.40
  4. Step 4: Simplify right side
    90,845,382.72x = 6,497,748,401,280,436
  5. Step 5: Solve for x
    x = 6,497,748,401,280,436/90,845,382.72
  6. Step 6: Final answer
    x = 71,525,356.67

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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.