Home / 72,137.36-99,551.76-40,307.60

Finding the Fourth Proportional to 72,137.36, 99,551.76 and 40,307.60

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Solution

The fourth proportional to 72,137.36, 99,551.76 and 40,307.60 is: 55,625.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,137.36 : 99,551.76 = 40,307.60 : x
  2. Step 2: Convert to fraction form
    72,137.36/99,551.76 = 40,307.60/x
  3. Step 3: Cross multiply
    72,137.36x = 99,551.76 × 40,307.60
  4. Step 4: Simplify right side
    72,137.36x = 4,012,692,521.38
  5. Step 5: Solve for x
    x = 4,012,692,521.38/72,137.36
  6. Step 6: Final answer
    x = 55,625.72

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1.5x scale

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.