Home / 30,390,870.60-45,547,598.70-12,419,670.60

Finding the Fourth Proportional to 30,390,870.60, 45,547,598.70 and 12,419,670.60

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Solution

The fourth proportional to 30,390,870.60, 45,547,598.70 and 12,419,670.60 is: 18,613,687.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390,870.60 : 45,547,598.70 = 12,419,670.60 : x
  2. Step 2: Convert to fraction form
    30,390,870.60/45,547,598.70 = 12,419,670.60/x
  3. Step 3: Cross multiply
    30,390,870.60x = 45,547,598.70 × 12,419,670.60
  4. Step 4: Simplify right side
    30,390,870.60x = 565,686,172,474,988.25
  5. Step 5: Solve for x
    x = 565,686,172,474,988.25/30,390,870.60
  6. Step 6: Final answer
    x = 18,613,687.64

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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.