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Finding the Fourth Proportional to 85,239.62, 127,854.81 and 26,075.28

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Solution

The fourth proportional to 85,239.62, 127,854.81 and 26,075.28 is: 39,111.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,239.62 : 127,854.81 = 26,075.28 : x
  2. Step 2: Convert to fraction form
    85,239.62/127,854.81 = 26,075.28/x
  3. Step 3: Cross multiply
    85,239.62x = 127,854.81 × 26,075.28
  4. Step 4: Simplify right side
    85,239.62x = 3,333,849,970.10
  5. Step 5: Solve for x
    x = 3,333,849,970.10/85,239.62
  6. Step 6: Final answer
    x = 39,111.51

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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.