Home / 30,753,298.68-42,432,513.40-18,360,985.08

Finding the Fourth Proportional to 30,753,298.68, 42,432,513.40 and 18,360,985.08

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Solution

The fourth proportional to 30,753,298.68, 42,432,513.40 and 18,360,985.08 is: 25,333,956.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,753,298.68 : 42,432,513.40 = 18,360,985.08 : x
  2. Step 2: Convert to fraction form
    30,753,298.68/42,432,513.40 = 18,360,985.08/x
  3. Step 3: Cross multiply
    30,753,298.68x = 42,432,513.40 × 18,360,985.08
  4. Step 4: Simplify right side
    30,753,298.68x = 779,102,745,444,300
  5. Step 5: Solve for x
    x = 779,102,745,444,300/30,753,298.68
  6. Step 6: Final answer
    x = 25,333,956.97

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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.