Home / 85,734.84-128,602.27-35,787.69

Finding the Fourth Proportional to 85,734.84, 128,602.27 and 35,787.69

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Solution

The fourth proportional to 85,734.84, 128,602.27 and 35,787.69 is: 53,681.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,734.84 : 128,602.27 = 35,787.69 : x
  2. Step 2: Convert to fraction form
    85,734.84/128,602.27 = 35,787.69/x
  3. Step 3: Cross multiply
    85,734.84x = 128,602.27 × 35,787.69
  4. Step 4: Simplify right side
    85,734.84x = 4,602,378,172.06
  5. Step 5: Solve for x
    x = 4,602,378,172.06/85,734.84
  6. Step 6: Final answer
    x = 53,681.54

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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.