Home / 85,648.39-128,476.23-26,485.18

Finding the Fourth Proportional to 85,648.39, 128,476.23 and 26,485.18

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Solution

The fourth proportional to 85,648.39, 128,476.23 and 26,485.18 is: 39,728.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,648.39 : 128,476.23 = 26,485.18 : x
  2. Step 2: Convert to fraction form
    85,648.39/128,476.23 = 26,485.18/x
  3. Step 3: Cross multiply
    85,648.39x = 128,476.23 × 26,485.18
  4. Step 4: Simplify right side
    85,648.39x = 3,402,715,656.76
  5. Step 5: Solve for x
    x = 3,402,715,656.76/85,648.39
  6. Step 6: Final answer
    x = 39,728.89

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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.