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Finding the Fourth Proportional to 86,885.80, 130,303.10 and 34,277.80

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Solution

The fourth proportional to 86,885.80, 130,303.10 and 34,277.80 is: 51,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,885.80 : 130,303.10 = 34,277.80 : x
  2. Step 2: Convert to fraction form
    86,885.80/130,303.10 = 34,277.80/x
  3. Step 3: Cross multiply
    86,885.80x = 130,303.10 × 34,277.80
  4. Step 4: Simplify right side
    86,885.80x = 4,466,503,601.18
  5. Step 5: Solve for x
    x = 4,466,503,601.18/86,885.80
  6. Step 6: Final answer
    x = 51,406.60

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1.5x scale

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.