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Finding the Fourth Proportional to 38,785.71, 53,482.40 and 35,390.39

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Solution

The fourth proportional to 38,785.71, 53,482.40 and 35,390.39 is: 48,800.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,785.71 : 53,482.40 = 35,390.39 : x
  2. Step 2: Convert to fraction form
    38,785.71/53,482.40 = 35,390.39/x
  3. Step 3: Cross multiply
    38,785.71x = 53,482.40 × 35,390.39
  4. Step 4: Simplify right side
    38,785.71x = 1,892,762,950.89
  5. Step 5: Solve for x
    x = 1,892,762,950.89/38,785.71
  6. Step 6: Final answer
    x = 48,800.52

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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.