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Finding the Fourth Proportional to 93,345.40, 128,779.01 and 54,028.51

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Solution

The fourth proportional to 93,345.40, 128,779.01 and 54,028.51 is: 74,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,345.40 : 128,779.01 = 54,028.51 : x
  2. Step 2: Convert to fraction form
    93,345.40/128,779.01 = 54,028.51/x
  3. Step 3: Cross multiply
    93,345.40x = 128,779.01 × 54,028.51
  4. Step 4: Simplify right side
    93,345.40x = 6,957,737,437.49
  5. Step 5: Solve for x
    x = 6,957,737,437.49/93,345.40
  6. Step 6: Final answer
    x = 74,537.55

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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.