Home / 85,660.40-128,495.64-33,070.16

Finding the Fourth Proportional to 85,660.40, 128,495.64 and 33,070.16

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Solution

The fourth proportional to 85,660.40, 128,495.64 and 33,070.16 is: 49,607.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,660.40 : 128,495.64 = 33,070.16 : x
  2. Step 2: Convert to fraction form
    85,660.40/128,495.64 = 33,070.16/x
  3. Step 3: Cross multiply
    85,660.40x = 128,495.64 × 33,070.16
  4. Step 4: Simplify right side
    85,660.40x = 4,249,371,374.10
  5. Step 5: Solve for x
    x = 4,249,371,374.10/85,660.40
  6. Step 6: Final answer
    x = 49,607.19

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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.