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Finding the Fourth Proportional to 85,880.60, 128,833.05 and 26,710.10

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Solution

The fourth proportional to 85,880.60, 128,833.05 and 26,710.10 is: 40,068.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,880.60 : 128,833.05 = 26,710.10 : x
  2. Step 2: Convert to fraction form
    85,880.60/128,833.05 = 26,710.10/x
  3. Step 3: Cross multiply
    85,880.60x = 128,833.05 × 26,710.10
  4. Step 4: Simplify right side
    85,880.60x = 3,441,143,648.81
  5. Step 5: Solve for x
    x = 3,441,143,648.81/85,880.60
  6. Step 6: Final answer
    x = 40,068.93

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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.