Home / 85,497.12-128,259.45-26,332.77

Finding the Fourth Proportional to 85,497.12, 128,259.45 and 26,332.77

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Solution

The fourth proportional to 85,497.12, 128,259.45 and 26,332.77 is: 39,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,497.12 : 128,259.45 = 26,332.77 : x
  2. Step 2: Convert to fraction form
    85,497.12/128,259.45 = 26,332.77/x
  3. Step 3: Cross multiply
    85,497.12x = 128,259.45 × 26,332.77
  4. Step 4: Simplify right side
    85,497.12x = 3,377,426,597.18
  5. Step 5: Solve for x
    x = 3,377,426,597.18/85,497.12
  6. Step 6: Final answer
    x = 39,503.40

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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.