Home / 64,985.69-89,686.29-39,486.18

Finding the Fourth Proportional to 64,985.69, 89,686.29 and 39,486.18

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Solution

The fourth proportional to 64,985.69, 89,686.29 and 39,486.18 is: 54,494.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,985.69 : 89,686.29 = 39,486.18 : x
  2. Step 2: Convert to fraction form
    64,985.69/89,686.29 = 39,486.18/x
  3. Step 3: Cross multiply
    64,985.69x = 89,686.29 × 39,486.18
  4. Step 4: Simplify right side
    64,985.69x = 3,541,369,252.76
  5. Step 5: Solve for x
    x = 3,541,369,252.76/64,985.69
  6. Step 6: Final answer
    x = 54,494.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.