Home / 30,390,861.60-45,547,585.20-12,419,661.60

Finding the Fourth Proportional to 30,390,861.60, 45,547,585.20 and 12,419,661.60

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Solution

The fourth proportional to 30,390,861.60, 45,547,585.20 and 12,419,661.60 is: 18,613,674.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390,861.60 : 45,547,585.20 = 12,419,661.60 : x
  2. Step 2: Convert to fraction form
    30,390,861.60/45,547,585.20 = 12,419,661.60/x
  3. Step 3: Cross multiply
    30,390,861.60x = 45,547,585.20 × 12,419,661.60
  4. Step 4: Simplify right side
    30,390,861.60x = 565,685,594,881,168.38
  5. Step 5: Solve for x
    x = 565,685,594,881,168.38/30,390,861.60
  6. Step 6: Final answer
    x = 18,613,674.15

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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.