Home / 86,931.72-119,968.74-48,692.90

Finding the Fourth Proportional to 86,931.72, 119,968.74 and 48,692.90

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Solution

The fourth proportional to 86,931.72, 119,968.74 and 48,692.90 is: 67,197.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,931.72 : 119,968.74 = 48,692.90 : x
  2. Step 2: Convert to fraction form
    86,931.72/119,968.74 = 48,692.90/x
  3. Step 3: Cross multiply
    86,931.72x = 119,968.74 × 48,692.90
  4. Step 4: Simplify right side
    86,931.72x = 5,841,626,159.87
  5. Step 5: Solve for x
    x = 5,841,626,159.87/86,931.72
  6. Step 6: Final answer
    x = 67,197.87

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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.