Home / 72,871,396.40-109,307,094.60-19,018,708.40

Finding the Fourth Proportional to 72,871,396.40, 109,307,094.60 and 19,018,708.40

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Solution

The fourth proportional to 72,871,396.40, 109,307,094.60 and 19,018,708.40 is: 28,528,062.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,871,396.40 : 109,307,094.60 = 19,018,708.40 : x
  2. Step 2: Convert to fraction form
    72,871,396.40/109,307,094.60 = 19,018,708.40/x
  3. Step 3: Cross multiply
    72,871,396.40x = 109,307,094.60 × 19,018,708.40
  4. Step 4: Simplify right side
    72,871,396.40x = 2,078,879,758,248,614.25
  5. Step 5: Solve for x
    x = 2,078,879,758,248,614.25/72,871,396.40
  6. Step 6: Final answer
    x = 28,528,062.60

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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.